22745506 has 24 divisors (see below), whose sum is σ = 40974336. Its totient is φ = 9432360.

The previous prime is 22745479. The next prime is 22745519. The reversal of 22745506 is 60554722.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 706 + ... + 6781.

It is an arithmetic number, because the mean of its divisors is an integer number (1707264).

Almost surely, 2^22745506 is an apocalyptic number.

22745506 is a deficient number, since it is larger than the sum of its proper divisors (18228830).

22745506 is a wasteful number, since it uses less digits than its factorization.

22745506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7534 (or 7527 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 22745506 is about 4769.2248846118. The cubic root of 22745506 is about 283.3338965002. Note that the first 3 decimals are identical.

The spelling of 22745506 in words is "twenty-two million, seven hundred forty-five thousand, five hundred six".